It's quite common for guests to book accommodation together and when is time to pay they would like to split charges.
Now at the moment items cannot be separated. They can only be allocated to the correct profile and in the case it helps, if they stay multiple nights, they can be divided among the various profiles.
We would suggest to up-vote this great feature request that has been already created in our feedback page. Just click here and vote as more votes this idea gathers, the greater the chance that we'll see it and implement it.